Re: DTD and Illegal Construct

["Thomas B. Passin" <tpassin@home.com>]

Jim Shain wrote -

> Honestly, I'm not playing stump the experts, but what about the instance?
>
> ((A, B, D?) | (A?, B, C?, D?, E))
>
> In this instance 'C' can only be present if 'E' is present.
>
> -Jim
>
But it's ambiguous, because if C is absent, the parser can't know whether E is
allowed or not.  Ambiguous content models aren't allowed in xml.

Cheers,

Tom P